<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>数组去重</title>
			<script>
				var arr = [1, 2, 3, 4, 5, 2, 3, 4];
				var newArr = [];
				for (var i = 0; i < arr.length; i++) {
					var bool = true;
					for (var j = 0; j < newArr.length; j++) {
						if (arr[i] === newArr[j]) {
							bool = false;
						}
					}
					if (bool) {
						newArr[newArr.length] = arr[i];
					}
				}
				console.log(newArr);
			</script>
	</head>
	<body>
		<h1>数组去重</h1>
	</body>
</html>
